412 W. Gibbs on the theory of Atomicities. 
SnF,{3KF+HF, sn 9(KF2), 
| (HES) 
ZxF,-+8CuF, Ease | 3(CuF,)” 
SnF,+4NH,F Sn{ 4(NH,F,) 
SnFt+-BaF, Sn } i aMF,)” 
o7rF,-+-2KF-LNiF, Bn (RFs) "(NIP)" 
ZrF,+2NiF, Zr 2(NiF,)’ 
oZrF, +5NaF ae} (NaF,),(F), ZrF,+4KF 2x | (KF). 
KF KF,) 
ZF, +9KF — Zr{ (RPa)s SiFj42KF = sn? 
2F KF zx | (KF) 
3 
The compounds of the fluorids of tantalum, niobium, arsenic 
and antimony with other fluorids may be reduced to the follow- 
ing types, taking the pentatomic element as the determinant, and 
as before omitting water of crystallization for the sake of sim- 
plicity.* a 
F 
TaF,+2KF Taj NbO,F,+2KF Nb{F 
“ae a (RF), O2F,+ | Fa 
| F 
NbF,+2KF Nb | (ip,), NbOFstSKF Nb | (KF,)s 
F 
NbOF,-++3KF-LHF x} (H@) 
(KF 3)s 
uN pvii 
3NbOF,+-5KF *Nbv } O3(KFa)sFs 
uN pvii 
uN pit 
3NbOF;+4KF a 03(KF2)sF; 
8 
NbOF,+2ZnF, NbiF 
(ZnF,)” 
SOF, KE, Sb{ ftp), SbF,,2KF, Sb | (RF). 
It d that in ¢ fo: en above 
bols of the elements in the expressions on the left hand 
equivalent, i on the right they signify ato 
o. ‘ while in 
: will te > barred letters is the occasion of this 
